healy



July 3, 1928. .Re. 17,020

L. J. D. HEALY PAVING BLOCK Original Filed Aug. 5 1.921

W6. 47mg. A 77% placed together.

Reieeued July 3, 1928 UNITED STATES PATENT oFFicE.

LEON J. I). KELLY,

OF MILWAUKEE, WISCONSIN, ASSIGNOR TO WRIGHT RUBBER PROD- UGIS COMPANY,OF BACINE, WISCONSIN, A CORPORATION OF WISCONSIN.

ravme BLOCK.

Original Io. 1,473,767, dated November 13, 1923, Serial 110.490938,filed August 5, 1921. Application for reissue filed February Thisinvention relates to a paving block. The object of the invention is toprovide the block with flanges and recesses which will interlock it inhorizontal alinement with its adjoining blocks, and which will requireparticular sides of adjacent blocks to be The blocksprovided by thisinvention are particularly advantageous for pavements or other surfacecoverings in which the blocks have to be arranged ina prescribed mannerto form a particular of the pavement.

The accompanying block embodying the invention, views therein are asfollows:

Fig. 1 is a top plafr view of a paving block,

Fig. 2 is a bottom plan view thereof,

Fig. 3 is. a transverse section showing a number of the blocks appliedto a; surface to be covered thereby, and

Fig. f is a top plan view of asurface covcred or paved with the blocks.

The block illustrated-in the drawings comprises a substantiallyrectangular member 1 of rubber. It may, of course, be made in otherforms and of other material. I

The member is shown as having recesses or depressions 2, 3 and 4 open atthe bottom thereof arranged in three of its edges. Of course, adifferent number of recesses or depressions maybe used and they may alsobe arranged in all or a less number of the edges of the member.

The depth of the depressions or recesses is less than the thickness ofthe member itself.

A plurality of projecting fingers 5, 6 and 7 are formed on the member.These projections are complementary to the recesses or depressions.

The pro ecting finger of one member will, therefore, fit into therecesses or depressions of another member arranged adjacent thereto. Thebottom surfaces of these projecting fingers and of the members are inthe same plane.

The marginal edges of the upper surface of the member are in the sameplanes with and directly over the marginal edges of the lower surface ofthe member throughout the drawing illustrates a and the design on thesurface number of the blocks.

a, 1925. Serial No. 6,469.

greater portion of their extent. Theupper and lower portions of themember are, therefore, substantially coextensive.

When the blocks are being laid, one of them is so placed that the bottomsurface of its projecting finger lies fiat along the surface to becovered.

In order that each member may be held in place on the surface which itcovers, nails, screws or other fastening means 8 may extend through theprojecting fingers and into the floor, wall, roadway or other placebeing covered thereby. I

After one block has been securely fastened, another one may be arrangedalongside so that the finger thereof enters the recess of the memberalready fastened and a finger of the member already fastened fits into arecess of the member being arranged in place.

Ordinarily, when laying the blocks, fastening means are provided foronly two 0 the projecting fingers of each block, as one finger of theone being arranged in place must be inserted in a recess of the adjacentone already laid.

Thus, if laying the blocks from left to right, no fastemng means wouldbe provided for finger 5, while if laying from right to left, nofastening means would be pro vided for finger 6.

. As the blocks are being laid, the edges of adjacent blocks may becemented together so as to prevent water or other liquid seeping downbetween the same.

Figs. 3 and 4 show a surface covered by a I-t'will be noted that theexposed surfaces of the blocks entirely cover the fingers andcooperating recesses which form the interlocking means therebetween.

Therefore, the exposed surface of the covering or paving is free fromany projections by which the blocks might become dislodged 0r displaced.

It will be further noted that in laying the blocks, every one occupiesthe same relative position with respect to the adjacent one.

tend in the same ments of the blocks relation.

The invention contained herein is, of course, susceptible of otherembodiments and adaptations. i

What I claim is:

1. A paving block comprising a substantially rectilinear body having afinger projecting from each of the opposite edges thereof inasymmetrical arrangement, and a correspondingly shaped and positionedrecess on the edge opposite said finger, all being offset from themedial line.

. 2. A paving block comprising a substan tially rectilinear body havinga finger projecting from. each of the opposite edges thereof inasymmetrical arrangement and offset from the medial line of said'body,and a correspondingly shaped and positioned recess in the side oppositeeach of said fingers, both fingers and recesses lying entirely below theplane'of the obverse side of said block.

3. A paving block comprising a substan tially rectilinear body having afinger projecting from each of the opposite edges thereof inasymmetrical arrangement, a correspondingly shaped and positiohed recessin the edge opposite said finger, said recess and finger being offsetfrom themedial line, another finger projecting from one of the otheredges, and a recess located on the remainingedge opposite thereto and inalinement with said finger.

4:. A paving block comprising a substantially rectilinear body having afinger projecting from each of the opposite edges thereof inasymmetrical arrangement, a correspondingly shaped and positioned recessin the edge opposite each finger, said recess and finger being offsetfrom the medialqline of said body, another finger projecting from one ofthe other edges, and a recess located in the remaining edge and beingopposite thereto and in alinement, with said finger, said fingers andrecess lying entirely below the plane of the observe side of said block.

5. A paving block comprising a substantially rectilinear body having afinger projectingfrom one edge thereof, andi=a correspondingly shapedand positioned recess in the opposite edge, both being offset from themedial line of said body, said finger and recess being eachsubstantially one half the thickness of said block.

6. A paving block comprising a substantially rectilinear body havinga'finger projecting from each of the opposite edges thereof inasymmetrical arrangement, a correspondingly shaped and positioned recessin the edge oppositeeach of said fingers, said finger and recess beingofiset from the medial line, another finger projecting from one of theother edges, and a recess located on the remaining edge and beingopposite thereto and in alinement with said finger, said fingers andrecesses lying entirely below the plane of the obverse side of saidblock, said fingers and recesses being substantially one half thethickness of said block.

7. A paving or covering block comprising a block having recesses in theedges thereof, and correspondingly shaped fingers project ing from theedges thereof, some of said edges having both projections and recessesand others of said edges having only projections or recesses, the depthof the recesses and the thickness of the fingers being less than thethickness of the block, whereby when two similar blocks are arrangedside by side the projection of one enters the recess of the other andlocks. the blocks together.

8. A pavingor covering block having recesses in two oppositeedgesthereof and corresponding fingers projecting from such edges, therecesses and projections being located near one end of the unit-farecess only in another edge thereof, and a corresponding finger in theedge opposite'thereto, all of the recesses being open at the bottom ofthe unit, and the recesses and projections being less in depth andthickness respectively than the thickness of the unit so that when aplurality of such units are arranged edge to edge with thefingers lockedinto the corresponding recesses the fingers of one unitare'covered bythe adjacent units.

LEON J. D. HEALY.

